Epitaxial (La, Sr)TiO₃ on Textured Ni?W as a Conductive Buffer Architecture for High Temperature Superconducting Coated Conductor

Journal Article · Tue Jul 01 04:00:00 EDT 2008 · Physica C

DOI:https://doi.org/10.1016/j.physc.2008.04.010· OSTI ID:937145

Kim, Kyunghoon ^[1]; Norton, David P ^[2]; Christen, David K ^[1]; Cantoni, Claudia ^[1]; Aytug, Tolga ^[1]; Goyal, Amit ^[1]

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1. ORNL
2. University of Florida

The formation of epitaxial (La,Sr)TiO3 on biaxially-textured Ni W metal alloy tape was examined as a conductive buffer layer for YBa2Cu3O7 film growth. A TiN epitaxial nucleation layer served as an effective template layer for subsequent (La,Sr)TiO3 film growth on the Ni W tape. The TiN/(La, Sr)TiO3 multilayer was epitaxial on the Ni W substrate as confirmed via four-circle X-ray diffraction. A high temperature superconducting YBa2Cu3O7 film was deposited epitaxially on the (La,Sr)TiO3/TiN/Ni W tape. The YBa2-Cu3O7 film exhibited a superconducting transition temperature of 86 K and critical current density of 0.42 x 106 A/cm2 at 77 K.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 937145
• Journal Information: Physica C, Journal Name: Physica C Journal Issue: 13 Vol. 468
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
EPITAXY
FILMS
HIGH-TC SUPERCONDUCTORS
LANTHANUM OXIDES
NICKEL
STRONTIUM OXIDES
SUBSTRATES
TITANIUM NITRIDES
TITANIUM OXIDES
TRANSITION TEMPERATURE
TUNGSTEN
YTTRIUM OXIDES